You should probably know that the official version of Limewire doesn't use a password. You get it from www.limewire.com
If you have got a version from somewhere else, there's no guarantee that it will work properly or that it will be free of spyware/adware.

The basic version of LW is free. The Pro version costs US$18.88 for 6 months of updates & email support. Any other version is a scam. Here's some information on scams
http://www.gnutellaforums.com/showth...threadid=28751

You can contact your bank or cedit card company, you may be able to get your money back. At least, keep watch on your card statements to make sure that no other payments are taken out.

It's up to you whether you want to keep using a scam version of LimeWire. Personally, I wouldn't.